Polishing bonnet



May 24, 1949.

G. E. METCALFE POLISHING BONNET F1e d Cot. 16,` 1947 wwf m m ATTORNEYS Patented May 24, 1949 UNI-TED STATES s,

TENT

4 Claims* 1 This invention :relates :tofrotar-y l:polishing.adevices-orheads for attachment to powdered spinfdies, .and more .particularly to @devices of this:

character, constructed .to .present substantially fiat-'or broad-.facesbto thelvork.

An: object-of the invention 4is to provide. an

improvedxenshioned, singlepolishing elementzfor attachment to a, rdriving Wheel, which element has dual polishing'means yet is extremely 'sim'- ple and. economical in construction, vthe element being arranged to be. readily reversible :on the Wheel Vso as :to :present `one-or: another afp-two polslngmenfbers to'sthe worlgxand themolish ingA member '.,notexposed providing a vensltion-` backing forthei-:member which is .exposed;

Infaccomplishing this object'ithe invention .provides ka pair 'of sheets;preferablyzcutrinfthe shape ofdisks, formed Ifrom soft, flexible, .pol-istintoaina,- terialsuch as sheepskin having longV fibres, or

carpeting .or the like, eachfdiskihavi-ng.apolishs ing side anda reverse .or back side and the disks being permanently. secured stoge'tlfierv in V.hack-tosback relation. The peripheral portionsof` the disks have securedto them, as by stitches,V a flexible fastening strip whichv :is preterablyi of fabric andfcarries a1draWstringand=the organization is such that. the disks may be 'placed'.

against andoverl-ie the :face of `the wheel with veither one of the vpolisliingtco:iibrons'fsides exposed, vand may be ytied to the wheel by'aextending the fabric fastening Vstripe-long the peripheral part of the. back Vof the WheeLandtightening .the tie-string.

A .further Aobject .of the invention yisf-to provide an improved polishing element or device as above, in which the edge portions fof 4the polishing :disks and; vfabric strip, 'as welles the stitching `along said portions,..are not exposed-britzinstead con cealed and vprotected y,against abrasionand. faveling. In accomplishing this, the-polishing disks are sewed tothe fabric fastening strip Witirali the parts .in-vertedo-r in reversed position, the disks having, their fibre-carrying, or polishingsides facingzeach other. A shortiength-offthefperipherieso-f the disks are not sewed however, -thefends the peripheral portions of the are. not' stitched. The entire 'assemblage is -then fturned inside out, by passing thedisk and stri-p througlrrV the opening-of theenclosure, thereby'y causing the:

polishing sides of the disks to be exposed and onopposite sides of lthe assemblage, 'the fabric ,2, strip-being' inverted andv extending'#along-ittici peripheral Vportions of lthe disks.

with eachother.

the otheraof thefpolishi'ng 'faces ofi thef-iiskss exposed, both y.of .the disks .extending fin'fsupel'e posedrelfz'aztionover' the 'face `tif-fthedrivingwhee.

'lightening of the 'draw-stringseonresthesupem posed :.polishingxrdisks; :tightly to ether-wheel.'

Infoneiformof the invention one-of' theidiskss isaof .sheepskin having' exposed" longff-bi'essand thezfotherfis ofxcarpeting material. ln another@ form-l of Ltheinvention both .of Evthe .'asfenf sheepskin. having longl nbre-S. ln eithercasesxthef disk which :is not exposed provfides :.an1J-a.d@vam+-- tageous 'cushion-.backing-for the4 diskv/hichtdsfemeposed*y .thereby adding tok the-yieldabilityathez f exposed fdisk.

In ,aamodication l of. :the :invention :theffsnpers posedv polishing disks' Vhave valigned openings@ their central portions :for `receiving spindleeonfi which fthe driving" .wheel :iis carried, thezadis'kssbes ing provided .with Washers wherebyftheymay'bei clamped to the saidspindle By this:rzoristrim;`

tiom. with. `the provision of Hazhoilow spindie; :ai: polishing substance :may bel :fed y'xtc thefworkinga face .et '.the exposed polishing diskvvwhilezithefflat'# polishing device made in accordance witlstedz"he-I inventionr the :driving Wheely and .spindlerrfbeing shown. in elevation. 2:is a Irear Viewfoftheidnad-wlishingffeiew ment,v the folded fabric' strip thereof beingeidrawn together :at the back by fa :draw-string.

Fig. .3 :is .a fragmentary section taken throfighv a peripheral portion of .a '.dual polishing element f form-edv oi two slfieepskin disks', the efabric fastenf ing .strip being folded itself. andthe folded.

portions sewed'together. '.1 Fig; 4 .is xa view like vlilig.. `3 but :showing feneffof'f thef. disksl as being vformed ofi oarpetingfrmate- A Figs?) a fragmentary section'fof alperiplfierati portion oi apolishing- -eitement' citer' A-L dsawstring: isfthen passed along the inside of'theifabric the lends 'off the ydraw'-string..e. ztemii-ngrouttmrouglftu p the-fopeni-ng'at the ends ofthe fastening;estinto;V and'tzlie'latter isV foldedv flat` on- 'itselfL-,around'f thefdr-ewwstringl soy as to ybring the ypclisliirigfftlisks:'- baekto-back and. substantially engagement.'

is now-folded; eitherin onefdirection or 'thezothen over the edge of a driving Wheel, wherebyzoneimv 3 of the disks to the fastening strip and prior to the element being turned inside out.

Fig. 6 is a fragmentary sectional view of the polishing element of Fig. 5 subsequent to its being turned inside out and secured to a driving wheel.

Fig. 7 is a fragmentary sectional view through the center portion of a polishing element illustrating a modication of the invention whereby the disks are provided with aligned center openings, and

Fig. 8 is a plan or face view of the polishing element of Fig. 7, mounted on a wheel and hollow spindle.

Referring to Figs. l, 2 and 3, the improved polishing device shown therein comprises a pair of sheepskin disks I and II having long Woolen bres I2 and I3, respectively, which constitute the polishing sides of the disks. The reverse or back sides of the disks are disposed against and in contact with each other. While the polishing device shown in these figures has a disklike shape, it should be understood that shapes other than circular, and polishing material other than sheepskin may be used. Any soft, flexible, sheet polishing material may be employed, from which to form the disks IB and II, whether it be the hide of animals such as sheepskin or whether it be carpeting material as illustrated in Fig. 4, or whether it be any other soft, woven or fleecelike material.

The disks Il) and II are secured together in back-to-back relation by a pair of fabric strips I vland I5 which are respectively sewed to the peripheral portions of the disks and are also sewed to each other along their free edges, the latter seam also having a leather band I6. Preferably the fabric strips I4 and i5 are sewed to the disks I and II separately and while superposed thereon and extending in a curve, and the strips are then folded over as shown in Fig. 3 so that the sewed portions thereof and peripheral portions of the disks are enclosed. As seen in Fig. 2, the ends I'I of the fabric strips are made to substantially meet each other, so that the strips in effect constitute broken rings or bands. A draw-string I8 is passed inside and between the strips I4 and I5 closely adjacent the leather band I 6, and the strips sewed together by a circular row of stitches I9, as shown in Figs. 2 and 3.

Referring to Fig. 1, the disks IEI and II may be secured to a driving wheel 2l] carried on a spindle ZI by placing the disks against the face of the wheel and folding the fabric strips I4 and I5 over the periphery of the Wheel so that the strips extend along and overlie part of the back of the wheel. When the draw-string I8 is tightened and tied, the disks Ii and II will be securely fastened to the wheel and overlie the face thereof in superposed relation.

It will be noted that the disks I and II may be fastened to the Wheel 20 with either one of the disks exposing its polishing bres, the other disk being as a consequence located directly adjacent the face of the wheel and in engagement with the latter. By this organization, the disk which is not exposed provides an advantageous cushion-backing for the disk having the exposed bres, thereby producing a desirable yielding effect to the exposed disk when the device is in u'se, and facilitating the polishing operation.

In the form of the invention shown in Figs. 1 through 3 both of the polishing disks are formed of sheepskin, whereas in the form of the invention-shown in Fig. 4 one of the disks is formedv 4 of carpeting material. In this figure, the disk indicated at IIa is of carpeting material, while the disk II) is of sheepskin. Either the disk I 0 or the disk IIa may be exposed for polishing, depending on how the disks are applied to the driving wheel 20. In any event the disk not exposed provides a cushion-backing for the disk which is exposed.

Referring to Fig. 5, the disks I and I I may be sewed together along their peripheral portions by a unitary fabric strip 22, the sewing being done with the edge portions of the disks and strip outwardly located or exposed as shown. With this construction, according to the invention, a short length of the peripheral portions of the disks IU and II are not sewed, and the ends of the strip 22 are terminated short of each other so that a gap or opening is provided. Thus, in effect, an enclosure is produced by the assemblage of disks I0, II and strip 22, the said enclosure having a substantially fiat circular or pancake shape. After the disks have been sewed to the strip 22 the assemblage is turned inside out by passing the disks and the strip through the opening of the enclosure, whereupon the libre faces I2 and I 3 of the disks will be located on the exterior, on opposite sides of the assemblage. The draw-string I8 may now be inserted in the enclosure and extended along the fabric strip 22, and the strip folded over on the string and itself, whereupon the disks may be secured to the driving wheel 20 in the manner shown in Fig. 6, the strip 22 being folded over the edge of the wheel and the draw-string I8 being tightened and tied in the same manner as illustrated in Fig. 2.

Referring to Figs. 7 and 8, polishing disks 23 and 24 may be provided, having their peripheral portions secured together as described above, the central portions of the disks having aligned openings 25 and 26 respectively and having washers 21 secured to the disks at the openings, as by staples 28. In this form of the invention, a hollow spindle 29 for the polishing wheel 20 may be extended through the aligned openings 25 and 26 and the washers 21, and the disks 23 and 24 may be clamped to the spindle in any suitable manner as by a nut 3U, Fig. 8. By this organization, a polishing substance may be fed through the hollow spindle 29 to the working face of the exposed disk while the latter is rotating and in engagement with the work.

Variations and modifications may be made within the scope of this invention and portions of the improvements may be used without others.

I claim:

1. A polishing device comprising two sheets formed of flexible, sheet, polishing material, each sheet having a polishing side and a back side; and a exible fastening strip having opposite longitudinal edge portions secured to edge portions respectively of the one sheet and the other and permanently securing the sheets together in back-to-back relation, substantially the entire edge portions of the strip and sheets being secured together whereby the sheets and strip form an enclosure, the strip engaging the polishing sides of the sheets and the edges of the sheets and strip facing in substantially the same directions whereby they may be al1 disposed within the said enclosure; and means carried by the fastening strip for removably securing the sheets and strip to a driving wheel whereby the sheets overlie the face of the wheel in superposed relation.

2. A polishing device comprising two sheets formed of flexible, sheet, polishing material, each sheet having a polishing side and a back side; and a flexible fastening strip having free ends and opposite longitudinal edge portions, the latter being secured to edge portions respectively of the one sheet and the other, and permanently securing the sheets together in back-to-back relation, substantially the entire edge portions of the strip and sheets being secured together whereby the sheets and strip form an enclosure having an opening, the strip engaging the polishing sides of the sheets and the edges of the sheets and strip facing in substantially the same directions whereby they may be all disposed within the said enclosure; and a tie-string extending along the inside of the fastening strip, the end portions of the tie-string being exposed at said opening of the enclosure whereby when the strip is folded over the back peripheral portions of a driving wheel, the string may be disposed in the fold and drawn and tied to secure the device to the wheel.

3. A polishing device comprising two sheets formed of iiexible, sheet, polishing material,

each sheet having a polishing side and a back side; and a strip of fabric having opposite longitudinal edge portions sewed to edge portions respectively of the one sheet and the other, and permanently securing the sheets together in back-to-back relation, substantially the entire edge portions of the strip and sheets being secured together whereby the sheets and strip form an enclosure, the strip engaging the polishing sides of the sheets and the stitches and the edges of the sheets and strip facing in substantially the same directions whereby they may be all disposed Within the said enclosure; and means engaging the fabric strip for drawing the strip together to removably secure the sheets and strip to a driving wheel whereby the sheets overlie the face of the wheel in superposed relation.

4. A polishing device comprising a substantially rigid driving wheel; a pair of sheepskin disks permanently secured together along their peripheries in skin to skin relation, said disks being of substantially the same diameter as the wheel; and strip fabric secured to the peripheral portions of the disks for removably securing the disks to the driving wheel to overlie the face thereof, said fabric being folded around and engaging the periphery of the wheel and extending over the back of the wheel and having at its free edge a drawstring and means for carrying the same, said fabric being so secured to said peripheral portions as to be folded in opposite directions and engage the edge portions in each folded position whereby said pair of disks may be placed against the face of the driving wheel with either of the eece sides exposed, and tied to the wheel by extending the said fabric strip along part of the back of the wheel and tightening the drawstring, the disk with the fleece side not exposed providing a cushion backing for the disk with the exposed fleece side.

GEORGE EDWIN METCALFE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 704,789 Elson July 15, 1902 1,358,538 Fry Nov. 9, 1920 1,470,014 Kootz Oct. 9, 1923 1,506,404 Booth Aug. 26, 1924 1,757,228 Albertson May 6, 1930 1,873,503 Stewart Aug. 23, 1932 1,998,244 Lang Apr. 16, 1935 2,329,222 Schlegal Sept. 14, 1943 

